Elementary school math problems, you can t use x, elementary school math problems you can t set X,

qqliuyueling"Hello:

I can ask your questions:

1 12 + 1 36) = 9 (points).

A: The two met nine minutes later.

2. Speed and: 300 3 = 100 (m) Speed difference: 300 30 = 10 (m) 100-10 = 90 (m) B speed: 90 2 = 45 (m) A speed: 45 + 10 = 55 (m).

A: A speed is 55 meters, B speed is 45 meters.

Kilometer-hour = 19-meter-second.

160 8-19 = 1 (m).

A: The person's walking speed is 1 meter per second.

The above is the answer to your question, best wishes and thank you.

1 (1 12 + 1 36) = 9 minutes.

300 3 = 100 meters minutes --- speed and.

300 30 = 10 meters minutes --- speed difference.

100+10) 2=55 m min---A.

100-55 = 45 m min --- B.

Kilometer-hour = 19-meter-second.

160 8-19 = 1 m sec.

1.Zhang's speed is one-third of the king's, and the distance Zhang walked when they met was one-third of the king's, so Zhang walked a quarter of the whole road, which is 9 minutes, formula: 1 (1 36 + 1 12).

2.Meet in the same direction for 30 minutes, 10 meters per minute, A is 10 meters faster than B per minute When walking on the opposite side for 3 minutes, two people walk 100 meters per minute, A 55 B 45 Formula: A:

300 3+300 30) 2, B is (300 3-300 30) 2

3.The speed is 68400 per hour, that is, 19 meters per second, and the whole car takes 8 seconds for 160 meters, 20 meters per second, indicating that the speed of people is 1 meter per second Formula: 160 8-68400 3600

Garbage: None of this.

1 (1 12 + 1 36) = 9 minutes.

300 3 = 100 meters minutes --- speed and.

300 30 = 10 meters minutes --- speed difference.

100+10) 2=55 m min---A.

100-55 = 45 m min --- B.

Kilometer-hour = 19-meter-second.

160 8-19 = 1 m sec.

By: Onion Radish Head - Director Level 8 3-22 18:52Got it.

1. Solution; Because the total price of their books is equal, and each language is more expensive than a mathematics, then this problem can be found first to find the unit price of the language or the unit price of mathematics. If you look at the language book as 100 books, its total price is more than 100 mathematics books (yuan, this extra 50 yuan, that is, the language books are less than the mathematics books (100-80) = the money of 20 language books, then the ** of each language book is equal to (50

20) yuan. Calculated according to the inscription;

20 = yuan) yuan) answer; The unit prices of Chinese and math books are RMB and RMB 2 respectively.

2. It is known that the total price of tables and chairs, the unit price of tables and chairs is more expensive than that of chairs, and the unit price of chairs is required, so to speak; Think of the table as a chair.

14 + 28) = 42, you can find 14 tables that cost more than the chair (yuan, then subtract the extra money from the total price, that is, the total price of 42 chairs, and the unit price of the chair = the total price of 42 chairs

42。Calculated according to the inscription;

42=yuan) A; The unit price of the chair is RMB.

Question 1: (Yuan, this is a math book.)

2+ yuan, this is the language of the text.

It means that all 80 language books are more than 80 math books is 40 yuan, (100-80) means how many math books are in 40 yuan, and the unit price of math books is obtained by dividing the two. I won't talk about language books.

Question 2: (238-14* yuan, is the price of the chair.)

Yuan is the price of the table.

238-14* represents the total price minus the amount of money that all the tables have more than the chairs, i.e., the total price required to reduce the price of the table to the same as the chairs, and (14+28) indicates the total number of chairs (including the reduced tables).Divide the two by the price of the chair. The tables add up.

Question 1: 80 language books and 100 math books are equivalent.

Then it shows that the ** of 1 language book is equivalent to 100 80 = the ** of a math book, and a language book is more expensive than a math book.

Then it means that this math book is worth a yuan.

So a math book is worth a dollar.

The ** of a language book is 2+ yuan.

In the second question, each joe is more expensive than each chair, so 14 tables are equal to 14 chairs and 14 times the yuan (i.e., 49 yuan).

Therefore, 14 tables and 28 chairs are equivalent to 238 yuan, which is 14 + 28 = 42 chairs plus 49 yuan equals 238 yuan.

Then the ** of a chair is (238-49) 42 = yuan, and the ** of a table is the yuan.

Problem solving process. Question 1, Question 2 (238-14.)

Question 1: If the unit price of the math book is x yuan, then the unit price of the language book is x+ yuan, and the equation is listed: 80 (x+

Question 2: If the chair is x, then the table is x+, 14(x+

（(100-80)

20 = yuan) yuan) answer; The unit prices of Chinese and math books are RMB and RMB 2 respectively.

42=yuan) A; The unit price of the chair is RMB.

The remaining half is 2 again, and there are 4 left, indicating that 4+2=6 is the remaining half, and the rest is Duan Feng 6+6=12

Take out half of its early tan and 3, indicating that half of the original grip is 6+3=9, so it was originally 18

The remaining half is 2 more, and there are 4 left, which means that 4+2=6 is half of the remaining sails, and the rest is 6+6=12

Take out half of it and 3, indicating that the original half of the open shed is 12 + 3 = 15, so the original is 15 + 15 = 30

1. Because it was a round trip, I walked two distances.

2 (1 15 + 1 10) = 12 km/h 2 (100-81) (86-81) 4 times.

3. Both grandparents and grandchildren have risen by 5 years.

Five years ago, the sum of the ages of the grandparents was 100-5 2=90 years old, and the age ratio of the grandparents was 5:15+1=6

90 1 6 = 15 years old.

90 5 6 = 75 years old.

1) (30 2) (30 15 + 30 10) = 12 (kmh).

2) (the title is problematic).

3) (100-5 2) (5+1) 5+5=80 (years).

Questions (1) and (2) are problematic.

Question (3), Grandpa is 80 years old this year.

3 yuan A: On average, each student has to pay yuan.

This is the total price divided by 36 people per person per person.

[。On average, each student has to pay 4 dimes.

Hello: From the title, the first 3 are 4 yuan and 5 corners, and there are 33 in the back, each with 3 corners, that is, 9 yuan and 9 corners; i.e. co-meta.

The amount of money that each student needs to pay is: yuan, that is, the average student has to pay 4 dimes.

This problem is to be done with a system of equations, but if not a little difficult.

4 basketballs 10 soccer 280, then 8 basketballs, 20 soccer balls 560, then 3 soccer balls cost 614-560=54, a soccer 18, a basketball is (280-18x10) and divide by 4 to get 25 yuan a basketball.

614 divided by 2 = 307 That's 4 basketballs and a soccer ball equals 307 307-280 = 27 Soccer balls are 27 27 divided by 18 per soccer ball Needless to say, each basketball is 25 Hope to adopt, thank you.

Directly multiply the second condition by 2, that is, 8 basketballs and 20 footballs are 560 yuan, and then subtract from the first condition, knowing that 3 footballs cost 54

So a soccer ball is 18 yuan.

In the substitution conditions, you know that a basketball is 25 yuan.

It's impossible, don't know how to do it.

Profit and loss problem, (35 * 5 + 50 * 7) (50-35) = 35 points (35 + 5) * 35 = 1400 meters.

Formula: (Profit + Loss) (The difference between the two allocations per person) = Number of people.

Big Profit - Small Profit) (the difference between the two allocations per person) = Number of people.

Big loss - small loss) (the difference between the two allocations per person) = number of people.

50 * 7 + 35 * 5 = 350 + 175 = 525525 (50-35) = 35 minutes Specified time distance = 50 * (35-7) = 1400 meters.

or = 35 * (35 + 5) = 1400 meters.

35 (5+7) (50-35) = 28 (points).

28 50 = 1400 (m) or 35 (28 + 7 + 5) = 1400 (m).

It's a matter of profit and loss.

(35 5 50 7) (50 35) 35 (min) 50 35 50 7 1400 (m) or.

35 35 35 5 1400 (m).

Here's how to solve the problem:

35 5 50 7) 525 (m) Distance difference (50 35) 15 (m) Speed difference 15 meters difference means 1 minute ....

44 (1+1 2+1 3)=44 (11 6)=44 Sun Bo 11*6=4*6=24

This one is suspicious of the temple of the bend temple, there are 24 monks.

A total of 84 + 16 = 100 yuan.

If the sister is 4 times, the sister is 100 4 (4+1) = 80 yuan.

So give 84-80 = 4 yuan.

The elder sister is four times as much as the younger sister, and in the end the elder sister has four shares, and the younger sister has one share, then, a total of five cents, 16 + 84 = divided by 5 = 20 So, give four dollars. Hope it helps.

84-4＝4（16+4）

It's okay for my sister to give my sister 4 yuan.